Heater



FIG. 1 is a top left perspective view of a first embodiment of a heatershowing our new design;

FIG. 2 is a top plan view of the heater of FIG. 1;

FIG. 3 is a bottom plan view of the heater of FIG. 1;

FIG. 4 is a front elevational view of the heater of FIG. 1;

FIG. 5 is a rear elevational view of the heater of FIG. 1;

FIG. 6 is a right side elevational view of the heater of FIG. 1;

FIG. 7 is a left side elevational view of the heater of FIG. 1;

FIG. 8 is a top left perspective view of a second embodiment of a heatershowing our new design;

FIG. 9 is a top plan view of the heater of FIG. 8;

FIG. 10 is a bottom plan view of the heater of FIG. 8;

FIG. 11 is a front elevational view of the heater of FIG. 8;

FIG. 12 is a rear elevational view of the heater of FIG. 8;

FIG. 13 is a right side elevational view of the heater of FIG. 8; and,

FIG. 14 is a left side elevational view of the heater of FIG. 8.

The broken lines shown in the views depict environmental subject matteronly and form no part of the claimed design.

CLAIM The ornamental design for a heater, as shown and described.